Franchise Racing Products Lexan body stiffeners
Franchise Racing have a set of Lexan body stiffeners for a range of applications available. Including four front and four rear plates the set contains enough stiffeners for two touring car bodies. The parts just need to be cut out, bend at the lines and attached using double sided tape to prevent annoying body tucks or wobbly behaviour at high speeds.
Source: Franchise Racing Products [squareup.com]